FT/GN/68/01/23.01.16

SRI VENKATESWARA COLLEGE OF ENGINEERING

COURSE DELIVERY PLAN - THEORY Page 6 of 6

Department of Electronics and Communication Engineering / LP: EC 6402
Rev. No: 01
Date: 29/01/2016
B.E/B.Tech/M.E/M.Tech : EC Regulation: R-2013
PG Specialisation : -
Sub. Code / Sub. Name : EC 6402 - COMMUNICATION THEORY
Unit : I

Unit Syllabus : AMPLITUDE MODULATION - Generation and detection of AM wave-spectra-DSBSC, Hilbert Transform, Pre-envelope & complex envelope - SSB and VSB –comparison -Superheterodyne Receiver.

Objective: To introduce the concepts of various amplitude modulations and their spectral characteristics for designing AM communication systems

Session
No * / Topics to be covered / Ref / Teaching Aids
1 / Introduction to communication - representation of signal – time domain, frequency domain. / 1,2,3,7,8 / PPT/ICT
2 / Classification of signal - continuous time signal, discrete time signal - Review of spectral characteristics of periodic and non-periodic signal. / 1,2,3,7 / PPT
3 / Need for modulation, amplitude modulation, degrees of modulation, power and current relation in AM / 1,2,3,7 / PPT
4 / Generation of AM – Collector modulator, square law Modulator, Balanced Modulator, Switching Modulator, High and low level modulators / 1,2,3,7 / PPT
5 / Demodulation of AM – Square law, Envelope detector, Low level and High level AM transmitters(Block diagram approach), Numerical Examples / 1,2,3,7 / PPT/BB
6 / DSB-SC modulation, Generation of DSB-SC-Balanced, Ring modulator / 1,2,3,7 / PPT
7 / Demodulation of DSB-SC - Coherent, Envelope detector, Pre-envelope, complex envelope, Hilbert transform, / 1,2,3,7 / PPT
8 / SSB modulation and Generation of SSB-SC-Filter, phase shift, Weavers method.
Demodulation of SSB-SC – coherent detection / 1,2,3,7 / PPT
9 / VSB modulation, Generation of VSB signals- phase discrimination method
Demodulation of VSB signals / 1,2,3,7 / PPT
10 / Comparison of Amplitude modulation systems,Superhetrodyne receiver, Performance parameters of receivers, Numerical Examples / 1,2,3,7 / PPT/ BB
Content beyond syllabus covered (if any):
Low level and High level AM transmitters(Block diagram approach), Performance parameters of receivers.

* Session duration: 50 minutes

Sub. Code / Sub. Name: EC 6402 - COMMUNICATION THEORY
Unit : II

Unit Syllabus : ANGLE MODULATION - Phase and frequency modulation-Narrow Band and Wind band FM - Spectrum - FM modulation and demodulation – FM Discriminator- PLL as FM Demodulator - Transmission bandwidth.

Objective: To introduce the concepts of angle modulations and their spectral characteristics for designing angle modulated communication systems.

Session
No * / Topics to be covered / Ref / Teaching Aids
11 / Introduction to angle modulation-Frequency modulation, Phase Modulation / 1,2,5,7,8 / PPT/ICT
12 / Single tone FM, Narrow band FM- Generation / 1,2,5,7 / PPT
13 / Wideband FM – Generation / 1,2,5,7 / PPT
14 / Frequency Spectrum, Transmission bandwidth of FM, Problems / 1,2,5,7 / PPT/BB
- / CAT - I / - / -
15 / Generation of FM signal/FM Modulation-Direct FM (reactance tube, varactor diode, VCO) / 1,2,5,7 / PPT
16 / Generation of FM signal-Indirect FM (Armstrong method)
Demodulation of FM signals - Slope detector, / 1,2,5,7 / PPT
17 / Demodulation of FM signals - Ratio detector / 1,2,5,7 / PPT
18 / Demodulation of FM signals - Phase Discriminator, PLL as FM Demodulator,Comparison of AM, FM, PM / 1,2,5,7 / PPT
19 / Comparison of AM and Angle modulation, FM noise suppression, Numerical Examples - Problems / 1,2,5,7 / PPT/ BB
Content beyond syllabus covered (if any):
Slope detector, Ratio detector, Comparison of AM, FM, PM, Comparison of AM and Angle modulation, FM noise suppression

* Session duration: 50 mins

FT/GN/68/01/23.01.16

SRI VENKATESWARA COLLEGE OF ENGINEERING

COURSE DELIVERY PLAN - THEORY Page 6 of 6

Sub. Code / Sub. Name: EC 6402 - COMMUNICATION THEORY
Unit : III

Unit Syllabus : RANDOM PROCESS - Random variables, Central limit Theorem, Random Process, Stationary Processes, Mean, Correlation & Covariance functions, Power Spectral Density, Ergodic Processes, Gaussian Process, Transmission of a Random Process Through a LTI filter.

Objective: To understand the properties of random process and to apply the concepts for the design of Communication systems
Session
No * / Topics to be covered / Ref / Teaching Aids
20 / Review of probability - mathematical definition, law of probability, conditional probability / 1,2,4,7,8 / PPT/ICT
21 / Random Variables - discontinuous, discrete, distribution function, numerical characteristics and distribution laws of random variable / 1,2,4,7 / PPT
22 / Central limit theorem, Random process / 1,2,4,7 / PPT
23 / Stationary Process / 1,2,4,7 / PPT
24 / Mean, Correlation and covariance functions / 1,2,4,7 / PPT
25 / Power Spectral density, Energy Spectral density / 1,2,4,7 / PPT
26 / Ergodic Process / 1,2,4,7 / PPT
27 / Gaussian Process, Rayleigh distribution / 1,2,4,7 / PPT
28 / Transmission of a Random Process through a LTI filter, Tutorial / 1,2,4,7 / PPT/ BB
Content beyond syllabus covered (if any):
Rayleigh distribution, Energy Spectral density

* Session duration: 50 minutes

FT/GN/68/01/23.01.16

SRI VENKATESWARA COLLEGE OF ENGINEERING

COURSE DELIVERY PLAN - THEORY Page 6 of 6

Sub. Code / Sub. Name: EC 6402 - COMMUNICATION THEORY
Unit : IV

Unit Syllabus : NOISE CHARACTERIZATION - Noise sources and types – Noise figure and noise temperature – Noise in cascaded systems. Narrow band noise – PSD of in-phase and quadrature noise –Noise performance in AM systems – Noise performance in FM systems – Pre-emphasis and de-emphasis – Capture effect, threshold effect.

Objective: To acquire the knowledge on the effect of noise in communication systems for analyzing the noise performance of AM and FM systems.

Session
No * / Topics to be covered / Ref / Teaching Aids
29 / Sources and types of Noise- External Noise & Internal Noise / 2,3,6,8 / PPT/ICT
30 / Noise due to several amplifiers in cascade / 2,3,6 / PPT
- / CAT -II / - / -
31 / Noise Factor, Noise figure & Noise Temperature / 2,3,6 / PPT
32 / White Noise, Noise in cascaded systems & Noise Equivalent Bandwidth / 2,3,6 / PPT
33 / Narrowband Noise – PSD of in – phase and quadrature noise / 2,3,6 / PPT
34 / Noise performance in AM systems / 2,3,6 / PPT
35 / Cont., Noise performance in FM systems / 2,3,6 / PPT
36 / Pre- emphasis and de- emphasis in FM, Capture effect & threshold effect / 2,3,6 / PPT
37 / Performance comparison of AM and FM systems in presence of noise, Problems / 2,3,6 / PPT/BB
Content beyond syllabus covered (if any):
Performance comparison of AM and FM systems in presence of noise

* Session duration: 50 minutes

FT/GN/68/01/23.01.16

SRI VENKATESWARA COLLEGE OF ENGINEERING

COURSE DELIVERY PLAN - THEORY Page 6 of 6

Sub. Code / Sub. Name: EC 6402 - COMMUNICATION THEORY
Unit : V

Unit Syllabus : INFORMATION THEORY - Entropy - Discrete Memoryless channels - Channel Capacity -Hartley - Shannon law - Source coding theorem - Huffman & Shannon - Fano codes

Objective: To study the limits set by Information Theory and apply the concepts for achieving data compaction.

Session
No * / Topics to be covered / Ref / Teaching Aids
38 / Introduction – discrete message, Uncertainty, measure of information and properties, Information rate / 2,3,8 / PPT/ICT
39 / Entropy and its properties & Information Rate / 2,3,8 / PPT/ICT
40 / Source coding theorem, data compaction - prefix, Shannon -fano coding. / 2,3 / PPT
41 / Data compaction - Huffman coding, Concept of Lempel ziv coding / 2,3 / PPT
42 / Numerical examples / 2,3 / PPT/BB
43 / Discrete memoryless channels, Channel Capacity / 2,3 / PPT
44 / Hartley-Shannons theorem/law / 2,3,8 / PPT/ICT
45 / Numerical examples / 2,3 / PPT/BB
46 / Numerical examples, Review of the topics covered and discussion on university question papers / 1- 8 / PPT/ BB
- / CAT-III / - / -
Content beyond syllabus covered (if any):
Concept of Lempel ziv coding

* Session duration: 50 minutes

FT/GN/68/01/23.01.16

SRI VENKATESWARA COLLEGE OF ENGINEERING

COURSE DELIVERY PLAN - THEORY Page 6 of 6

Sub Code / Sub Name: EC6402 - COMMUNICATION THEORY

REFERENCES:

1. J.G.Proakis, M.Salehi, “Fundamentals of Communication Systems”, Pearson Education 2006.

2. S. Haykin, “Digital Communications”, John Wiley, 2005.

  1. B.P.Lathi, “Modern Digital and Analog Communication Systems”, 3 rd Edition, Oxford

University Press, 2007.

  1. B.Sklar, “Digital Communications Fundamentals and Applications”, 2nd Edition Pearson

Education 2007

5. H P Hsu, Schaum Outline Series - “Analog and Digital Communications” TMH 2006

6. Couch.L., "Modern Communication Systems", Pearson, 2001.

7. S. Haykin, “Communication Systems”, 4 th Edition, John Wiley, 2014

8. http://nptel.ac.in/courses/117102059/

http://textofvideo.nptel.iitm.ac.in/video.php?courseId=117101053

Prepared by / Approved by
Signature /
Name /

D.Menaka, S.M.Mehzabeen,b.nethaji

/ Dr. S.MUTHUKUMAR
Designation /

Asst. Prof.

/ Head of the department - EC
Date
Remarks *:
Remarks *:

* If the same lesson plan is followed in the subsequent semester/year it should be mentioned and signed by the Faculty and the HOD